Noob ish investor- did I make a mistake by buying voo in a brokerage instead of a Roth IRA? (Long term goals)

So I recently put around 15k into voo for long term growth, realizing after that a Roth would have been smarter due to taxes. Yes I know dumb me. Should I just leave it and start putting more money into my Roth? Or sell and buy in my Roth? I also have some other high dividend / return rate stocks currently in my Roth but not too much invested so far.